I wonder how much of the anti-vax movement is more about a rationalization of a fear of needles than anything else. Would there be as many anti-vaxers if vaccines were administered by pill? Inhaled seems even less threatening...
I speculate the majority of people who rejected Covid shots didn't do so because of the needle.
Then, by the time it looked like it was proven safe, it didn’t look very effective (in terms of possible benefit to my demographic)